
var name="ma",sex=1,id=1
console.log(id,name,sex);
var pic=10,psc=50; var z=pic*psc;
console.log(z);
pic=20
psc=100
z=pic*psc
console.log(z);
var r=5,p="3.14",c,s
c=2*r*p
s=p*r*r
console.log(c,s);
var a=1,b=2,c;
c=a;
a=b;
b=c;
console.log(a,b);

